.tou {
    width: 1910px;
    height: 50px;
    background: #d2f8ff;
}
.shenti {
    width: 1910px;
    height: 500px;
    background: #86d4ff;
}
.daohanglan {
    width: 200px;
    height: 300px;
    background: #fbfbff;
    position: absolute;
    top: 150px;
    left: 80px;
}
.shuju {
    width: 1500px;
    height: 300px;
    background: #f9fbff;
    position: absolute;
    top: 150px;
    left: 300px;
}